#!/bin/sh
# PCP QA Test No. 1595
# Exercise Linux kernel virtual machine memory metrics.
#
# Copyright (c) 2024 Red Hat.  All Rights Reserved.
#

seq=`basename $0`
echo "QA output created by $seq"

# get standard environment, filters and checks
. ./common.product
. ./common.filter
. ./common.check

_check_valgrind
[ $PCP_PLATFORM = linux ] || _notrun "Tests Linux kernel memory metrics"

_cleanup()
{
    cd $here
    $sudo rm -rf $tmp $tmp.*
}

status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_filter()
{
    sed \
	-e "s,$PCP_PMDAS_DIR,PCP_PMDAS_DIR,g" \
    #end
}

# There is NO uninitialized value use at line 161 or 163 of
# sysfs_kernel.c ...
# valgrind on vm20 (x86_64 Ubuntu 20.04) complains circa
# 11 Sep 2024, but ONLY when the linux PMDA is compiled
# -O2, not -O0
#
cat <<'End-of-File' >$tmp.suppress
{
   botch
   Memcheck:Cond
   fun:refresh_sysfs_kernel
   fun:linux_refresh.isra.0
   fun:linux_fetch
   ...
   fun:__pmFetchLocal
   fun:__pmFetch
   ...
}
End-of-File
grind_extra="--suppressions=$tmp.suppress"

# real QA test starts here
root=$tmp.root
export LINUX_STATSPATH=$root
export LINUX_PAGESIZE=4096
pmda="60,$PCP_PMDAS_DIR/linux/pmda_linux.so,linux_init"

memmetrics=`pminfo mem.vmmemctl hyperv.balloon | LC_COLLATE=POSIX sort`

for mem in $here/linux/sysfs-*-???
do
    base=`basename $mem`
    file=`echo $base | sed -e 's/^sysfs-//g' -e 's/-...$//g'`

    rm -fr $root
    mkdir -p $root/sys/kernel/debug || _fail "root in use when processing $mem"
    cp $mem $root/sys/kernel/debug/$file
    cd $root

    echo "== Valgrind checking $file metric values and metadata - $base"
    _run_valgrind pminfo -L -K clear -K add,$pmda -dfmtT $memmetrics 2>&1 \
    | _filter

    echo && echo "== done" && echo
    cd $here
done

# success, all done
status=0
exit
